Authorities Cited: United States Code 29 U.S.C. § 151 29 U.S.C. § 152(2) 29 U.S.C. § 152(3) 29 U.S.C. § 152(5) 29 U.S.C. § 158(b)(4)(ii) 29 U.S.C. § 158(e) 29 U.S.C. § 160(e) 29 U.S.C. § 160(f) 45 U.S.C. § 151 49 U.S.C. § 40102(a)(15) 49 U.S.C. § 41102 Supreme Court 341 U.S. 675, 688-689 394 U.S. 369 467 U.S. 883, 891 473 U.S. 61, 68 Circuit Courts 324 F.2d 217, 220 809 F.2d 607, 610 820 F.2d 1097, 1099-1100 198 F.3d 1079, 1082 231 F.3d 1156, 1164